Pith Number

pith:EL4SWWV6

pith:2013:EL4SWWV6XZPFVNFTO4P4PO3ZEL

not attested not anchored not stored refs pending

Measuring Leaf Chlorophyll Concentration from Its Color: A Way in Monitoring Environment Change to Plantations

Muhammad Abdul Hakim Shibghatallah, Siti Nurul Khotimah, Sony Suhandono, Sparisoma Viridi, Teja Kesuma

arxiv:1305.1148 v2 · 2013-05-06 · physics.bio-ph · q-bio.QM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EL4SWWV6XZPFVNFTO4P4PO3ZEL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:12:34.846501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22f92b5abebe5e5ab4b3771fc7bb7922e2ac99857448a369840e507a8617d49f

Aliases

arxiv: 1305.1148 · arxiv_version: 1305.1148v2 · doi: 10.48550/arxiv.1305.1148 · pith_short_12: EL4SWWV6XZPF · pith_short_16: EL4SWWV6XZPFVNFT · pith_short_8: EL4SWWV6

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EL4SWWV6XZPFVNFTO4P4PO3ZEL \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 22f92b5abebe5e5ab4b3771fc7bb7922e2ac99857448a369840e507a8617d49f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76f53a07a57061da6318ce46e5f84c9f96ab74ca0ab158bea6aa1f34def89395",
    "cross_cats_sorted": [
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2013-05-06T11:17:13Z",
    "title_canon_sha256": "b47190d5e824eebc80a827ad4bfb37071883feeeeeb58c6b8db157a1dfe4f8cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.1148",
    "kind": "arxiv",
    "version": 2
  }
}